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' 2 SheetsSheet 1. HGHTHALL & NORTH.

H Car Heater. v No. 75,172. v Patented March 3, I868.

' fnvezzions: Wa'zfneaaeafivf N.PE\'ER$. PHOTO LTHOGRAPHER WASHINGTON uc 2 Sheets Sheet 2. LIGHTHALL & NORTH,

Car Heater.

No. 75,172. Patented March 3, 1868.

Qumrgtatrs gaunt @ffirrn A. II. LIGHTHALL AND OHARLES'F. NORTH, OF OQHOES, NEW YORK, ASSIGNORS TO. CHARLES F. NORTH, OF THE. SAME PLACE.

Letters Patent No. 75,172, dated Dftzrch 3, 1868.

IMPROVEMENT IN OAR-HEATERS.

TO WHOM IT MAY'CONCERN? Be it known that we, A. H. LlGHTHALL and CHARLESF. N ORTH, of Oohoes, in the-county of Albany, and State of New York,have invented anew and valuable Improvement in Devices for HeatingRailroad-Cars; and we do hereby declare that the following is a full,clear, and exact description of the construction and operat'ion of thesame, reference being had to theannexed'drawings, making a part of thisspe cificatiomand to the letters-and figures of reference markedthereon.

The object of our invention is to provide means for heatingrailroad-cars that shall be more cheap, simple, and efiicient than anysimilar device heretofore known or .used for that purpose. v

To this end we construct shooter in the form shown o'n Figure 1 of thedrawings, the particular parts of which are represented by the lettershereinafter mentioned, fllld we arrange it for adjustment in the bottomof the ear. The top of our heater is raiscd abou't' thrce-cignths of aninch abovethe cnhbottom iiiside the car,

being about the height of an ordinary met, so that when matting issprcad,the surface thereof is flush with the top of the heater. 1 I ILetter A, of the drawings, represents a bed-piece of the car. Letter Bisthe outside cylinder of the heater, constructed of sheet iron. Letter 0isthe inside cylinden-al'so constructed of sheet iron. The air-spacebetween said cylinders is about eight inches .in width. Letter 1) is thecast-iron fire-box. The space between sai 'dfirebox and cylinderO isabout eight inches, in width. We call the latter the hot-air space, andthe first air-spacementioned the cold-air space.- Letter E is theregister, by which hot air is admitted to the car. Letter F is acircular rim, that rests onthe cylinders B and O, and covers thecold-air space, and at the same time forms a support for the register E.Letter G is the damper rod, extending through the cold-air space fromrim F to the bottom of the heater. Letter H is the damper attached tothe rod G,'an d operates as shown in the draught-space Letter Irepresents thcdraught-funncl, through which the draughtfor the fire isdetained. It may be shaped either in a circular or square form, and itisdesigned by its funnel-shape to secure additional draught from themovement of the cars. Letter J is the'lid of the fire-box, which isheldin'its place by means of the lugs'L. Letter is the escape-flue. Weusually attach a pipe to said flue, extending underneath the ear, to onecorner thereof, and-to its top. This device secures additional draughtto the heater, while it also condfi ets elf-into the atmosphere allsmoke and gas. Letter N is a rod, attached at its lower end to the grateof the fire-box, and its upper end is adjusted in the clutch 0,50 as tomake it easilyremovable. Its office is to hold the grate firmly in itsplace, and at the sainc time to supply means for shaking said grate andtherewith the fire. Letter K is an ear cast on the top of the lid of thefire-box,.designed to furnish means for releasing said lid and removingLetter Preprcsents perforations in cylinder 0, designed to allow coldair to pass from the cold-air space into the hot air, and therebycreating a current. 'Letter Q is a cast-iron plate, resting upon thc'bedofthe car, and-to which the entire heater is attached, as shown on thedrawings. Letter R is the ashbox. Letter S is a small circular piece ofcast iron, fitting an opening in the bottom of the ash-box.,in the samemapner as a. griddle fits a boiler-hole in a stove, and it has a wireattached to its side, connecting it with the grate of the firebox. Thiswire is marked T-on the drawings. The oiliee of this griddle S is toafford means for the escape of ashes when the fire-grate is shaken ordumped. Letter U is a lever, constructed in the form shown on Figure 3.It is the instrument by which we shake the fire'gratc, operatethedampers, and remove and replace the lid of the firebox.

Our heater is peculiarly well adapted to the use of street-oars, and itis for that especial purpose that we recommend it to the public. I i

What we claim as our invention, and desire to secure'by Letters Patent,is- A heater forrailro'ad-cars, having cylinders 13 and C, fire andash-boxes, as described, rod N, clutch O, lugs L, (lrnughbfunnel I,griddle S, and wire T, constructed, combined, and arranged substantiallyas specified.

' A. H. LIGHTHALL, CHAS. F. NORTH. Witnesses:

J. W. MILLER, Ones. Dorie. I

